CN103565471A - Ultrasound imaging system and method - Google Patents
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- CN103565471A CN103565471A CN201310315571.XA CN201310315571A CN103565471A CN 103565471 A CN103565471 A CN 103565471A CN 201310315571 A CN201310315571 A CN 201310315571A CN 103565471 A CN103565471 A CN 103565471A
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Abstract
An ultrasound imaging system and method includes acquiring motion data for a region-of-interest (ROI). The system and method includes calculating a quality parameter based on the motion data, wherein the quality parameter represents an amount of unwanted motion in the ROI. The system and method includes performing an action based on the quality parameter.
Description
Technical field
The disclosure relates generally to for ultrasonic image-forming system and method based on exercise data calculated mass parameter.
Background technology
Big or small to obtain the clinical applicable volume for example having, to required time of application (fetal heart imaging) and spatial resolution not fast with the conventional 2D matrix array probe of current generation ultrasonic system coupling.According to present practice, developed a kind of method the area-of-interest (ROI) of expectation has been divided into two or more local volume.Each collection data to these local volume on a plurality of cardiac cycles, then by being stitched together the volume obtaining from each local volume come the complete 4D volume sequence of reconstruct on room and time.Final 4D ultrasound data comprises the data from a plurality of heart phase of all local volume.
Relative motion in ROI between dissection and probe may cause motion artifacts, and this motion artifacts has reduced the quality of 4D ultrasound data significantly.In order to obtain and generate high quality graphic, the important position that is ultrasonic probe can for example, with respect to just the anatomical structure (heart) in imaging is mobile.If relatively moved during obtaining, final 4D ultrasound data may be included in and while checking the image generating according to 4D ultrasound data, be visible as discontinuous spatial artifacts and/or time artifact.
Because the motion during obtaining may cause image artifacts, so obtain 4D with the least possible unexpected motion ultrasonic, be important.When obtain as the heart of one group of local volume 4D ultrasound data time, be necessary that on a plurality of cardiac cycles and carry out and obtain.If there is any unexpected motion, conventionally by only when completing the sequence of the image of checking film image after obtaining or passing in time ability this unexpected motion can be detected.If artifact is enough serious, it may cause 4D ultrasound data to use.In this case, concerning operator, may must again obtain 4D ultrasound data one or many.According to conventional system, operator may be forced to complete repeatedly and obtain repeatedly, could successfully obtain acceptable 4D ultrasound data afterwards.Obtaining of repeating lost time, and for operator and patient, is all inconvenient.
For these and other reasons, expect that a kind of improved method and ultrasonic image-forming system are for obtaining 4D ultrasound data.
Summary of the invention
Solve deficiency mentioned above, shortcoming and problem herein, by reading and understanding below description and will understand this.
In an embodiment, a kind of ultrasonic imaging method comprises area-of-interest (ROI) is divided into a plurality of local volume.The method comprises that each local volume from a plurality of local volume obtains 4D ultrasound data, and during the process of obtaining 4D ultrasound data from a plurality of local volume at least one of them obtains exercise data.The method is included in calculated mass parameter during the process of obtaining 4D ultrasound data.This mass parameter is based on exercise data, and represents unexpected quantity of motion in ROI.The method comprises based on mass parameter and performing an action.
In an embodiment, a kind of ultrasonic imaging method comprises area-of-interest is divided into a plurality of local volume, and obtains exercise data from ROI.The method comprises based on exercise data carrys out calculated mass parameter.Unexpected quantity of motion in this mass parameter indication ROI.The method comprises if mass parameter can be accepted, and obtains the 4D ultrasound data of each local volume of a plurality of local volume.
In another embodiment, ultrasonic image-forming system comprises probe, display device and carries out the processor of electronic communication with probe and display device.This processor is configured to area-of-interest (ROI) to be divided into a plurality of local volume, and obtains 4D ultrasound data from each local volume of a plurality of local volume.This processor be configured to during the process of obtaining 4D ultrasound data from a plurality of local volume at least one of them obtains exercise data.This processor is configured to based on exercise data calculated mass parameter, determines that whether mass parameter can accept, and perform an action based on mass parameter.
With reference to the accompanying drawings and describe in detail, multiple other features of the present invention, object and advantage will become apparent those skilled in the art.
According to one side of the present disclosure, a kind of method of ultra sonic imaging, it comprises: area-of-interest (ROI) is divided into a plurality of local volume; From each of described a plurality of local volume, obtain 4D ultrasound data; During the process of obtaining described 4D ultrasound data from described a plurality of local volume at least one of them obtains exercise data; Calculated mass parameter during the process of obtaining described 4D ultrasound data, wherein said mass parameter is based on described exercise data, and represents unexpected quantity of motion in described ROI; And perform an action based on described mass parameter.
Wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the additional 4D ultrasound data of each local volume of described a plurality of local volume.
Wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the only additional 4D ultrasound data of one of them of described a plurality of local volume.
Wherein said performing an action comprises, if described mass parameter can be accepted,, after scheduled time amount, stops obtaining 4D ultrasound data from each local volume of described local volume.
Wherein said performing an action comprises, if described mass parameter is unacceptable, stops obtaining 4D ultrasound data from each local volume of described local volume.
The wherein said exercise data that obtains comprises, obtains each exercise data of described a plurality of local volume.
Wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the only additional 4D ultrasound data of one of them of described a plurality of local volume.
Wherein said performing an action comprises, if described mass parameter can be accepted, shows the image based on described 4D ultrasound data.
During being also included in the process of obtaining described 4D ultrasound data, show described mass parameter.
The wherein said exercise data that obtains comprises and obtains M mode data or synthetic M mode data.
The wherein said exercise data that obtains comprises described 4D ultrasound data execution correlation technique.
According to a further aspect in the invention, a kind of method of ultra sonic imaging, it comprises: area-of-interest (ROI) is divided into a plurality of local volume; From described ROI, obtain exercise data; Based on described exercise data, carry out calculated mass parameter, wherein said mass parameter is indicated the unexpected quantity of motion in described ROI; And if described mass parameter can accept, obtain the 4D ultrasound data of each local volume of described a plurality of local volume.
Also comprise if described mass parameter can be accepted, show the image based on described 4D ultrasound data.
According to another aspect of the invention, a kind of ultrasonic image-forming system, it comprises: probe; Display device; And carrying out the processor of electronic communication with described probe and described display device, wherein said processor is configured to: area-of-interest (ROI) is divided into a plurality of local volume; Obtain each 4D ultrasound data of described a plurality of local volume; During the process of obtaining described 4D ultrasound data from described a plurality of local volume at least one of them obtains exercise data; Based on described exercise data, carry out calculated mass parameter; Determine whether described mass parameter can be accepted; And perform an action based on described mass parameter.
Wherein said processor is configured to during the process of obtaining 4D ultrasound data, with real-time mode, calculate repeatedly and upgrade described mass parameter.
Wherein said action comprises, automatically obtains the 4D ultrasound data of each local volume of described a plurality of local volume, until described mass parameter can be accepted in scheduled time amount.
Wherein said processor is configured to show described mass parameter in described display device.
Wherein said action comprises if described mass parameter can be accepted, shows the image based on described 4D ultrasound data.
Wherein said action comprises if described mass parameter is unacceptable, automatically obtains at least additional 4D ultrasound data of one of them of described a plurality of local volume.
Wherein said action comprises if described mass parameter is unacceptable, automatically stops obtaining described 4D ultrasound data.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the ultrasonic image-forming system of embodiment;
Fig. 2 is schematically showing according to the volume of embodiment;
Fig. 3 is according to the flow chart of the method for embodiment;
Fig. 4 is the figure that the M pattern trace of passing is in time shown according to embodiment; And
Fig. 5 is according to the flow chart of the method for embodiment.
The specific embodiment
In detailed description below, with reference to accompanying drawing, these accompanying drawings form a part of describing and in explanation mode, show the specific embodiment that can implement in the accompanying drawings.These embodiment are enough described in detail, so that those skilled in the art can implement these embodiment, and be appreciated that and can utilize other embodiment, and under the prerequisite of scope that does not deviate from these embodiment, can carry out logic, machinery, electricity and other change.Therefore, below describe in detail and should not be considered as limiting the scope of the invention.
Fig. 1 is according to the schematic diagram of the ultrasonic image-forming system 100 of embodiment.Ultrasonic image-forming system 100 comprises that the element 104 driving in probe 106 is to be transmitted into pulse modulated ultrasonic signal emitter 102 and the launching beam shaper 101 of human body (not shown).According to embodiment, popping one's head in 106 can be 2D matrix array probe.But, according to other embodiment, can use the probe of any other type that can obtain the four-dimension (4D) ultrasound data.For the disclosure, term four-dimensional ultrasound data or 4D ultrasound data are defined as and are included in the ultrasound data that comprises a plurality of 3D volumes obtaining on the time period.4D ultrasound data comprises and illustrates how 3D volume is passed in time and the information that changes.Still with reference to figure 1, structure (as blood cell or the muscular tissue) backscatter of pulse modulated ultrasonic signal from health, to produce echo, this echo turns back to element 104.Element 104 converts echo to the signal of telecommunication or ultrasound data, and receptor 108 receives this signal of telecommunication.The signal of telecommunication that represents the echo of reception passes through receive beamformer 110, Beam-former 110 output ultrasound datas.According to some embodiment, popping one's head in 106 can comprise and carry out all or part of circuit that transmitting and/or received beam form.For example, all or part of of launching beam shaper 101, emitter 102, receptor 108 and receive beamformer 110 can be placed in probe 106.In the disclosure, can also use term " scanning " or " in scanning " to refer to obtain data by transmitting and receiving the process of ultrasonic signal.In the disclosure, can also use term " data " to refer to the one or more data sets that utilize ultrasonic image-forming system to obtain.User interface 115 can be for controlling the operation of ultrasonic image-forming system 100, comprise input, change scanning or the display parameters etc. of controlling patient data.
Ultrasonic image-forming system 100 also comprises the processor 116 of controlling launching beam shaper 101, emitter 102, receptor 108 and receive beamformer 110.Processor 116 carries out electronic communication with probe 106.For the disclosure, term " electronic communication " can be defined as and comprise wired connection and wireless connections.Processor 116 can be controlled probe 106 to obtain data.In processor 116 control elements 104, which element is in activity, and from the shape of the wave beam of 106 transmittings of popping one's head in.Processor 116 also carries out electronic communication with display device 118, and processor 116 can process data into image for showing in display device 118.According to embodiment, processor 116 can comprise central processing unit (CPU).According to other embodiment, processor 116 can comprise other electronic building bricks that can carry out processing capacity, for example digital signal processor, field programmable gate array (FPGA) or graphic boards (graphic board).According to other embodiment, processor 116 can comprise a plurality of electronic building bricks that can carry out processing capacity.For example, processor 116 can comprise and is selected from two or more electronic building bricks that comprise following electronic building brick list: central processing unit, digital signal processor, field programmable gate array and graphic boards.According to another embodiment, processor 116 can also comprise RF data demodulates and generate the complex demodulation device (not shown) of initial data.In another embodiment, can in processing chain, carry out earlier demodulation.Make processor 116 be applicable to carrying out the one or more processing operations to data according to a plurality of selectable ultrasound modality.These data can processed in real time during scan session when receiving echo-signal.For the disclosure, term " in real time " is defined as and comprises the process of lingeringly carrying out intentionally without any.For example, embodiment can obtain image by the real time rate of 7-20 volume/second.But, should be appreciated that real-time volumetric rate can be depending on the time span that the data of each volume obtaining for showing spend.Correspondingly, when obtaining the data of relatively large volume, volumetric rate may be slower in real time.Thus, some embodiment can have widely the real-time volumetric rate faster than 20 volume/seconds, and some other embodiment can have the real-time volumetric rate that is slower than 7 volume/seconds.During scan session, data temporarily can be stored in buffer (not shown), and in live (live) or off-line operation inferior to processing in real time.Some embodiments of the present invention can comprise that a plurality of processor (not shown) are to dispose the Processing tasks of being disposed according to the processor 116 of above-described example embodiment.For example, first processor can be for by the demodulation of RF signal and to its decimate (decimate), and the second processor can be for further deal with data before displayed map picture.Should be realized that, other embodiment can be used the difference of processor to arrange.
Ultrasonic image-forming system 100 can obtain data by for example volumetric rate of 10 Hz to 30 Hz continuously.The image that can adopt similar frame rate refresh to generate according to these data.Other embodiment can adopt different speed to obtain and video data.For example, some embodiment can obtain data by the volumetric rate that is less than 10 Hz or is greater than 30 Hz, and this depends on the size of volume and the application of expection.Comprise that memorizer 120 is for storing the data of obtaining of treated volume.In example embodiment, memorizer 120 has enough capacity and with storage, is equivalent to the ultrasound data of the volume of at least some seconds.The data of volume are beneficial to obtain according to it mode that order or time retrieves it and store.Memorizer 120 can comprise any known data storage medium.
Alternatively, embodiments of the invention can utilize contrast medium to realize.When ultrasonic contrast medium that use comprises microvesicle, contrast imaging generates the image of the enhancing of anatomical structure and blood flow in health.Obtain data when using contrast medium after, graphical analysis comprises separated harmonic wave and linear component, and enhancing harmonic component the harmonic component strengthening by utilization generate ultrasonoscopy.With applicable wave filter, carry out the separated harmonic component of signal from receiving.It is known in those skilled in the art with contrast medium, carrying out ultra sonic imaging, and therefore will not describe in further detail.
In various embodiment of the present invention, can for example, by other or the different relevant modules (, B pattern, color Doppler, M pattern, color M pattern, frequency spectrum Doppler, elastogram, TVI, strain, strain rate etc.) of pattern, come deal with data to form 2D or 3D data by processor 116.For example, one or more modules can generate B pattern, color Doppler, M pattern, color M pattern, frequency spectrum Doppler, elastogram, TVI, strain, strain rate and combination thereof etc.Memory image wave beam and/or volume, and can record and indicate these data to be acquired the timing information in the time of memorizer.This module can comprise, scan conversion module for example, for carrying out the operation of the scan conversion from beam space Coordinate Conversion to display space coordinate by image volume.Video processor module can be provided, this video processor module from memorizer reading images volume and in to patient's implementation displayed map picture in real time.Video processor module can store the image in image storage, reads and displayed map picture from this image storage.
Fig. 2 is schematically showing according to the volume of embodiment.Volume 200 can probe 106 as shown in Figure 1 obtains and as mentioned before, and popping one's head in 106 can be 2D matrix array.Volume 200 can define by the yardstick with respect to probe 106 based on it.For example, elevation direction 202, depth direction 204 and azimuth direction 206 all illustrate with respect to volume 200.Just as will be described in further detail below, volume 200 comprises the first local volume 208, the second local volume 210 and the 3rd local volume 212.
Fig. 3 is according to the flow chart of the method for example embodiment.The independent frame table of this flow chart shows the step that can carry out according to method 300.Additional embodiment can comprise unshowned additional step in Fig. 3 by step and/or the additional embodiment shown in different order execution.The technique effect of method 300 is the exercise data calculated mass parameters based on obtaining from area-of-interest (hereinafter referred to as ROI).Method 300 will be described according to the example embodiment that wherein method 300 is realized by the processor 116 of the ultrasonic image-forming system 100 of Fig. 1.In addition, method 300 will be described according to the embodiment that wherein obtains the 4D ultrasound data of heart of fetus in three local volume.One skilled in the art would recognize that method 300 can also be for obtaining the 4D ultrasound data of other organs or anatomical structure.Method 300 can also be for obtaining the 4D ultrasound data of the ROI with varying number local volume.For example, method 300 can have the ROI of few as 2 local volume or have the 4D ultrasound data more than the ROI of 3 local volume for obtaining.
With reference to figure 1, Fig. 2 and Fig. 3, at step 302 place, user selects for example ROI of volume 200.User can be based on by user interface 115 the scope of input selection ROI.ROI can be chosen as some or all of organ or tissue that checking is shown.According to example embodiment, ROI can be chosen as and comprise heart of fetus.According to other embodiment, ROI can be chosen as and comprise other organs, comprises human adult heart.
At step 304 place, processor 116 is divided into a plurality of local volume by ROI, for example the first local volume 208, the second local volume 210 and the 3rd local volume 212.Processor 116 can determine that how technical specification or the input of the user based on receiving by user interface 115 of the desired character based on 4D ultrasound data, ultrasonic image-forming system 100 are divided into local volume by volume 200.For example, user can select by user interface 115 desired character of 4D ultrasound data.These features can comprise as the variable of temporal resolution, line density, total acquisition time etc.Processor 116 can compare the technical specification of the desired character of 4D ultrasound data and ultrasonic image-forming system 100.For example, according to ROI wherein, comprise the example embodiment of heart of fetus, processor 116 can calculate must how many local volume so that obtain line density and temporal resolution or the refresh rate of the expectation of whole ROI.According to this example embodiment, processor 116 is divided into 3 local volume by ROI.But, one skilled in the art would recognize that according to other embodiment, ROI can be divided into the local volume of varying number.According to other embodiment, the shape of local volume and/or towards also can be different.
Next, at step 306 place, processor 116 is controlled the obtaining of exercise data of ROI.According to example embodiment, processor 116 can be controlled probe 106 to obtain the one or more M mode data in local volume 208,210,212.For example, can along First Line 214, obtain M mode data to the first local volume 208, can along the second line 216, obtain M mode data to the second local volume 210, and can along the 3rd line 218, obtain M mode data to the 3rd local volume 212.According to other embodiment, can be during method 300 from local volume only one of them obtains exercise data.
At step 308 place, the exercise data that processor 116 obtains based on step 306 place carrys out calculated mass parameter.According to embodiment, processor 116 can carry out calculated mass parameter by analyzing the exercise data of any unexpected movement.The demonstration methods of calculated mass parameter is below described in connection with Fig. 4.Then processor 116 shows the mass parameter of calculating based on exercise data at step 310 place.Next, at step 312 place, processor 116 determines whether mass parameter can be accepted.If mass parameter is unacceptable, method 300 turns back to step 306.Step 306,308,310 and 312 can be repeatedly, until the mass parameter of the exercise data based on obtaining recently can be accepted.
But if step 312 place, the definite mass parameter of processor 116 can be accepted, and therefore indicates the unexpected movement in ROI to be less than threshold quantity, method 300 advances to step 314, wherein obtains the 4D ultrasound data of ROI.According to other embodiment, can omit step 310, and processor 116 can determine whether mass parameter can be accepted and display quality parameter not.
Fig. 4 is according to the figure of the M pattern trace of passing in time of embodiment.The degree of depth in figure 400 expression y directions 402 and the standard time in x direction 404.In figure 400, every row pixel represents that single M pattern obtains or trace.M pattern trace represents the ultrasound data of single line, and in figure 400, represents each trace.Standard time along x direction 404 increases from left to right, this means that figure 400 illustrates M pattern trace and passes in time and how to change.According to example embodiment, figure 400 can illustrate any one of them the M pattern trace obtaining along First Line 214, the second line 216 or the 3rd line 218.Figure 400 illustrates wherein the embodiment that heart area is obtained on during a plurality of cardiac cycles M pattern trace.Figure 400 illustrates cycle movement lower than the first 405 of line 406.According to embodiment, this cycle movement can be beated corresponding to the rhythm and pace of moving things that has of patient's heart.There is the exercise data of about 10 cardiac cycles that comprise in first 405.The first 405 of figure 400 illustrates a heart part of showing the cycle movement in healthy patients.Therefore, do not need first 405 to analyze unexpected motion.But, the dissection that the second portion 408 of line 406 tops comprises the cycle movement that experience is not consistent with regular physiological movement.The partial analysis campaign of the M mode data that therefore, expectation represents the second portion 408 of figure 400.
According to embodiment, processor 116 can be carried out fast fourier transform to this exercise data, for example, to the data division (data as represented in first 405) of experience cycle movement is never experienced to data division (the represented data of the second portion 408) separation of cycle movement.Fast fourier transform represents exercise data in frequency domain, and makes processor 116 can easily identify the data division of for example, cycle movement in the frequency range of showing periodicity physiological movement (pulsatile heart is dirty) expection.Similarly, processor 116 can easily be identified the exercise data corresponding with the region of not showing periodicity physiological movement.According to the example shown in figure 400, processor 116 is identified as the exercise data of line 406 belows to show cycle movement and the exercise data of line 406 tops is identified as and does not show cycle movement.
Then, the represented data of second portion 408 that processor 116 can analytical line 406 tops.Although still, in frequency domain, processor 116 can be analyzed exercise data to identify any unexpected movement.Suppose that tissue is not moving, and pop one's head in and 106 remain in resting position, the represented exercise data of second portion 408 of figure 400 should not illustrate significant motion.Therefore, processor 116 can be in exercise data variation in this subsets of searching moving data.Those skilled in the art will recognize that, pop one's head in 106 and just between the dissection of imaging absolute zero to move be almost impossible.Therefore, adjusting threshold value or wave filter can be necessary only to identify certain more than value movement that may be caused by motion.Arranging of this threshold value or wave filter can be determined based on experimental study.
Figure 400 comprises the region 410 that unexpected motion is shown.Relevant second portion 408, should have minimum change in the horizontal direction of expression standard time, still, 410 places in region, significant discontinuous is visible.Region 410 is included between probe 106 and the tissue that just checking the M mode data obtaining while relatively moving at the degree of depth 412 places.Although represent second area 408 with graphic form on figure 400, should be realized that, can there is the region that unexpected motion is shown by checking that the fast fourier transform of exercise data is identified in processor 116.For processor 116, generate as not requisite to identify unexpected motion in the figure of figure 400.
According to embodiment, the exercise data that can obtain each local volume repeats the analysis of describing in conjunction with Fig. 4 above.In other words, because can obtain exercise data along line 214,216 and 218, processor 116 can be analyzed the exercise data obtaining along line 214, line 216 and line 218 independently.As described previously, the exercise data obtaining along First Line 214 represents the first local volume 208, and the exercise data obtaining along the second line 216 represents the second local volume 210, and the exercise data obtaining along the 3rd line 218 represents the 3rd local volume 212.Therefore,, by analyzing the exercise data from each local volume, processor 116 can determine in local volume whether have unexpected motion in any one.
One skilled in the art would recognize that as mentioned above, in frequency domain, analyzing M mode data is only a demonstration mode analyzing the exercise data of unexpected motion, and other embodiment can be used the other technologies of the unexpected motion in identification exercise data.
Referring back to Fig. 3, at step 310 place, processor 116 mass parameter that step display 308 places are calculated in display device 118.According to various embodiment, mass parameter can be shown as to icon or color-coded designator.For example, if mass parameter is within the acceptable range, can show the first icon, and if mass parameter outside acceptable scope, can show the second icon.Mass parameter can comprise color-coded and icon shape, so that the state of identification mass parameter.User can observe the mass parameter that shows in display device to obtain the whether feedback in acceptable level of unexpected motion between relevant ROI and probe 106.
Fig. 5 is according to the flow chart of the method for example embodiment.The independent frame table of this flow chart shows the step that can carry out according to method 500.Additional embodiment can comprise unshowned additional step in Fig. 5 by step and/or the additional embodiment shown in different order execution.The technique effect of method 500 is the motion calculation calculated mass parameters based in ROI.Method 500 will be described according to example embodiment, and wherein the method is realized by the processor 116 of the ultrasonic image-forming system 100 of Fig. 1.In addition, method 500 will be described according to the embodiment that wherein obtains the 4D ultrasound data of heart in three local volume.
With reference to figure 1, Fig. 2 and Fig. 5, at step 502 place, user selects for example ROI of this ROI.User can be based on by user interface 115 the scope of input selection ROI.
At step 504 place, processor 116 is divided into a plurality of local volume by ROI, for example the first local volume 208, the second local volume 210 and the 3rd local volume 212.Processor 116 can determine that how technical specification or the input of the user based on by user interface 115 of the desired character based on 4D ultrasound data, ultrasonic image-forming system 100 are divided into local volume by ROI.According to example embodiment, ROI can comprise heart of fetus.Processor 116 can calculate must want how many local volume so that obtain line density and temporal resolution or the refresh rate of the expectation of whole ROI.One skilled in the art would recognize that according to other embodiment, ROI can be divided into the local volume of varying number.According to other embodiment, the shape of local volume and/or towards also can be different.
Next, at step 506 place, the specific components in processor 116 control ultrasonic image-forming systems 100 is to obtain the ultrasound data of one of local volume.According to embodiment, processor 116 controls launching beam shapers 101, emitter 102, pop one's head in 106, receptor 108 and receive beamformer 110 to be to start by obtaining the ultrasound data of the volume of the first local volume 208.Next, after the data of volume of obtaining the first local volume 208, method 300 advances to step 508, and wherein processor 116 is controlled local volume 208,210,212 the obtaining of exercise data of one of them at least.According to example embodiment, processor 116 can be controlled probe 106 with in local volume 208,210,212, each obtains M mode data or the synthetic M mode data of one or more lines.For example, can along First Line 214, obtain M mode data to the first local volume 208, can along the second line 216, obtain M mode data to the second local volume 210, and the 3rd local volume 212 is obtained to M mode data along the 3rd line 218.Should be realized that other embodiment can obtain M mode data along the line in addition of the line shown in Fig. 2.In addition, some embodiment can obtain exercise data along two or more lines in each local volume.For example, embodiment can obtain exercise data along a plurality of lines towards different directions, to detect the motion on different directions.According to another other embodiment, step 508 is only obtained exercise data along single line during can being included in step 506,508,510,512,514, each repetition of 516 and 518.
According to other embodiment, can obtain according to different technology the exercise data of ROI.For example, processor 116 can generate synthetic M mode data by the one or more volumes based in ultrasound data.For the disclosure, term " synthetic M mode data " is defined as the ultrasound data that a plurality of frames of comprising from obtaining in the time period or a plurality of volume extract single line.Synthetic M mode data comprises this single line on the time period, exactly the same with common M mode data.But synthetic M mode data not obtains individually, but from 2D, 3D or the derivation of 4D ultrasound data.In addition, according to other embodiment, can be by obtaining exercise data by correlation technique.Processor 116 can be by each volume of 4D ultrasound data and the volume ratio of previously having obtained, and carry out correlation technique to detect the amount of movement between adjacent volume.For example, can use the technology of for example piece modeling to detect occurred how many movements between adjacent volume.Those skilled in the art will recognize that term " adjacent " can refer to volume adjacent on space, on the time adjacent volume or for the stage adjacent volume.Piece modeling comprises that the volume that each is obtained is divided into a plurality of less sub-volumes, then follows the tracks of in these sub-volumes, how each passes mobile in time.Based on synthetic M mode data or correlation technique, obtain exercise data and do not need to obtain additional ultrasound data.On the contrary, the 4D ultrasound data that processor 116 can directly obtain from step 508 obtains exercise data.
At step 510 place, processor 116 is according to exercise data calculated mass parameter.Step 512 and 514 is optional steps, and this optional step can be carried out alternatively during method 500.Below will the additional detail of relevant step 510 and optional step 512 and 514 be described.
Next, at step 516 place, processor 116 determines whether to need to have obtained during obtaining step 506 the additional ultrasound data of the identical local volume of its ultrasound data.If need to obtain the additional ultrasound data of this local volume, method 500 turns back to step 506.According to embodiment, desired length is at least a cardiac cycle, on the long time period, each local volume is obtained to ultrasound data, to obtain the ultrasound data of the local volume that represents a plurality of different heart phase.Therefore,, at step 516 place, processor 116 can use the heart rate of estimation to determine whether to obtain the additional ultrasound data of specific portion volume.In example embodiment, at least with the equally long time quantum of cardiac cycle during, method 500 is repeating step 506,508 and 510 repeatedly, optional step 512 and/or 514, and step 516.Each method 500 repeating steps 506,508 and 510, optional step 512 and/or 514 and during step 516, obtain the ultrasound data of the new volume of specific portion volume.For example, method 300 can be repeatedly by step 506,508 and 510, optional step 512 and/or 514 and step 516 take turns and turn to obtain the ultrasound data of a plurality of volumes of the first local volume 208.The ultrasound data of each volume represents the local volume (for example the first local volume 208) at different time points place.For the disclosure, uniformly, the ultrasound data of a plurality of volumes of each local volume is called to 4D ultrasound data, because they illustrate this local volume, how to pass in time and to change.For the disclosure, term " 4D ultrasound data " is also defined as and comprises the ultrasound data that for example, for larger volume (whole ROI) variation on the time period is shown.By repeating step 506,508 and 510, optional step 512 and 514 and step 516 many times, method 500 is obtained a 4D ultrasound data of the first local volume 208.
But, once the first local volume 208 has been obtained to enough ultrasound datas, at step 518 prescribing method 300, advance to next local volume.Because according to example embodiment, obtained the 4D ultrasound data of the first local volume 208, so processor 116 determines to advance to next local volume, according to embodiment, next local volume can be the second local volume 210.Then, method 500 repeatedly repeating step 506,508 and 510, optional step 512 with 514 and step 516 to the second local volume 210 is obtained at least to the 2nd 4D ultrasound data with the equally long time span of cardiac cycle.Then, at step 518 place, when the second local volume 210 has been obtained to enough 4D ultrasound datas, method 500 advances to next local volume, and according to example embodiment, next local volume can be the 3rd local volume 212.
At step 510 place, processor 116 is based on exercise data calculated mass parameter.This mass parameter is the unexpected momental designator occurring between probe 106 and ROI.Processor 116 can carry out calculated mass parameter by multiple different technology.Processor 116 can independently can be to ROI calculated mass parameter as a whole to each local volume calculated mass parameter or processor 116.According to example embodiment, processor 116 can carry out calculated mass parameter according to the method for previously describing in conjunction with Fig. 4.Calculated mass parameter can comprise that the unexpected quantity of motion based on detecting in exercise data is specified and score.
Those of skill in the art also will appreciate that, method 500 comprises two circulations.Internal recycle comprises step 506,508,510, optional step 512, optional step 514 and step 516.And outer circulation comprises step 506,508,510, optional step 512, optional step 514, step 516 and step 518.When each method 500 turns by internal recycle or outer circulation wheel, at step 508 place, obtain additional movement data.The mass parameter that can calculate at optional step 512 place's step display 510 places.According to another embodiment, can calculate a plurality of mass parameters, wherein each mass parameter represents only one of them interior exercise data of local volume.Mass parameter can be shown as figure and/or the numerical indicators of icon, color-coded designator or other types.In addition,, according to other embodiment, if the value of mass parameter is positioned at outside tolerance interval, it can produce listening alarm.Because step 512 is optional, so can be not do not carry out all display quality parameters of internal recycle or during cardiopulmonary bypass in each method 500.Step 512 can only just be carried out after method 500 has been carried out internal recycle and/or outer circulation pre-determined number.For example, according to embodiment, can be after obtaining each local volume, after obtaining whole ROI or obtain after the 4D ultrasound data of whole ROI just display quality parameter according to each embodiment.According to other embodiment, internal recycle that can every process method 500 or outer circulation are upgraded and display quality parameter.One skilled in the art would recognize that step 512 place display quality parameter causes display quality parameter during the process of obtaining 4D ultrasound data.By in step 512 place display quality parameter, during obtaining 4D ultrasound data process to user's oblatio about unexpected momental Real-time Feedback.For example, user can monitor the mass parameter of demonstration, obtains 4D ultrasound data simultaneously.In this way, user can receive the feedback of relevant excessive amount of motion during the process of 4D ultrasound data of obtaining ROI.By display quality parameter during the process obtaining 4D ultrasound data, user can receive the feedback of the unexpected motion in relevant any local volume very rapidly.This is the remarkable improvement that is better than routine techniques, and in routine techniques, until complete after the obtaining of the 4D ultrasound data of whole ROI, user could identify and have too many motion.In addition, utilize routine techniques, user must artificially identification artifact.Under contrast, method 500 by mass parameter very rapidly for user provides exercise data, thereby in specific occasion for user and patient save the plenty of time.According to other embodiment that still have, step 512 can be omitted, and method can not comprise the demonstration of mass parameter.
At optional step 514 places, based on mass parameter, perform an action.The action that step 514 place carries out can be depended on the state of mass parameter and change.If mass parameter can be accepted, action can comprise based on 4D ultrasound data synthetic image, and in display device 118 displayed map picture.Can be by first the 4D ultrasound data of each local volume being combined to generate the image based on 4D ultrasound data according to known technology.This image can comprise from the fragment in ROI (slice), based on ROI some or all volume perspective view (volume-rendering) or the image of any other type of some or all generations of the 4D ultrasound data that obtains according to step 506 place.If mass parameter can be accepted, indicate thus limited unexpected motion in local volume or desired motion nothing but, action can comprise and stops obtaining and/or showing the image based on 4D ultrasound data of 4D ultrasound data.Should be realized that, according to the embodiment shown in method 500, step 512 and 514 can be carried out in real time during the process of 4D ultrasound data of obtaining ROI.If to each local volume expectation time period on obtained 4D ultrasound data, and if mass parameter can accept, it is not essential obtaining any additional 4D ultrasound data.
If mass parameter is unacceptable, can carry out at step 514 place different demonstration movements.Unacceptable mass parameter is by the too many unexpected motion of one or more middle existence in indication local volume.According to embodiment, action can comprise and continues to obtain 4D ultrasound data until mass parameter can be accepted.This can by repeating step 506,508,510, optional step 512 and 514 and step 516 until mass parameter can have been accepted (accompanied).According to another embodiment, if the excessive unexpected motion of mass parameter indication, the action that step 514 place carries out can comprise and stops the obtaining so that user can start new obtaining of 4D ultrasound data.In addition, user may wish to reorientate probe 106, and wait is until patient stops moving, and then just obtains additional 4D ultrasound data.The action that step 514 place carries out can be automatically performed by processor 116, and maybe this action can be carried out by user artificially.
According to another embodiment, if mass parameter is unacceptable, processor 116 can be carried out and control probe 106 to continue to obtain the action of the 4D ultrasound data of ROI.Should be realized that according to some embodiment, processor 116 can be during the process of 4D ultrasound data of obtaining each local volume calculated mass parameter, quality of evaluation parameter, and performing an action based on mass parameter.For example, processor can be carried out during the process of 4D ultrasound data of obtaining ROI with icon or designator displayed map picture to represent the action of mass parameter.
This written description is used and is comprised that the example of optimum embodiment discloses the present invention, and makes any those skilled in the art can implement the present invention, comprises and manufactures and use any device or system and carry out any method being incorporated to.Patentable scope of the present invention is defined by claims, and can comprise other examples that those skilled in the art imagine.If these type of other examples have and there is no the structural element of the word language that is different from claims or this type of other examples and comprise and the word language of claims equivalent structure key element without substantial differences, these type of other examples are defined in the scope of claims.
| ? | Fig. 1 |
| 100 | Ultrasonic image-forming |
| 101 | |
| 102 | |
| 104 | |
| 106 | |
| 108 | |
| 110 | Receive beamformer |
| 115 | |
| 116 | |
| 118 | |
| 120 | Memorizer |
| ? | Fig. 2 |
| 200 | |
| 202 | |
| 204 | |
| 206 | |
| 208 | The first |
| 210 | The second |
| 212 | The 3rd |
| 214 | |
| 216 | The |
| 218 | The 3rd line |
| Fig. 3 | |
| 300 | Method |
| 302 | Select ROI |
| 304 | ROI is divided into local volume |
| 306 | From ROI, obtain exercise data |
| 308 | Calculated mass parameter |
| 310 | Display quality parameter |
| 312 | Can mass parameter be accepted? |
| 314 | Obtain 4D ultrasound data |
| ? | Fig. 4 |
| 400 | Figure |
| 402 | Y- |
| 404 | |
| 405 | First |
| 406 | |
| 408 | |
| 410 | |
| 412 | The degree of depth |
| ? | Fig. 5 |
| 500 | |
| 502 | |
| 504 | ROI is divided into |
| 506 | Obtain the ultrasound data of |
| 508 | Obtain |
| 510 | According to exercise data calculated |
| 512 | |
| 514 | Based on mass parameter, perform an |
| 516 | Repeat obtaining of local volume? |
| 518 | Advance to next local volume? |
Claims (10)
1. a method for ultra sonic imaging, it comprises:
Area-of-interest (ROI) is divided into a plurality of local volume;
From each of described a plurality of local volume, obtain 4D ultrasound data;
During the process of obtaining described 4D ultrasound data from described a plurality of local volume at least one of them obtains exercise data;
Calculated mass parameter during the process of obtaining described 4D ultrasound data, wherein said mass parameter is based on described exercise data, and represents unexpected quantity of motion in described ROI; And
Based on described mass parameter, perform an action.
2. the method for claim 1, wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the additional 4D ultrasound data of each local volume of described a plurality of local volume.
3. the method for claim 1, wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the only additional 4D ultrasound data of one of them of described a plurality of local volume.
4. the method for claim 1, wherein said performing an action comprises, if described mass parameter can be accepted,, after scheduled time amount, stops obtaining 4D ultrasound data from each local volume of described local volume.
5. the method for claim 1, wherein said performing an action comprises, if described mass parameter is unacceptable, stops obtaining 4D ultrasound data from each local volume of described local volume.
6. the method for claim 1, the wherein said exercise data that obtains comprises, obtains each exercise data of described a plurality of local volume.
7. method as claimed in claim 6, wherein said performing an action comprises, if described mass parameter is unacceptable, obtains the only additional 4D ultrasound data of one of them of described a plurality of local volume.
8. the method for claim 1, wherein said performing an action comprises, if described mass parameter can be accepted, shows the image based on described 4D ultrasound data.
9. the method for claim 1, shows described mass parameter during being also included in the process of obtaining described 4D ultrasound data.
10. the method for claim 1, the wherein said exercise data that obtains comprises and obtains M mode data or synthetic M mode data.
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| US (1) | US9392995B2 (en) |
| JP (1) | JP2014023928A (en) |
| CN (1) | CN103565471A (en) |
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| US9392995B2 (en) | 2016-07-19 |
| JP2014023928A (en) | 2014-02-06 |
| US20140031688A1 (en) | 2014-01-30 |
| FR2993768A1 (en) | 2014-01-31 |
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